Lake Anna Weather: El Nino Dominates Winter

January 24, 2024
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Welcome to February, the month where we start a slow warming process as we move into the Spring season, but also a month where we still can get big snowstorms. High temperature averages start in the middle 40s, but rise into the lower 50s by the end of the month.

It’s a pleasure to join the Lake Anna Breeze™ team. These articles will be focused on general weather information and weather education to better prepare yourselves for what Mother Nature can offer up to the Lake Anna community.

Our winter this year has been dominated by the Pacific Ocean circulation known as El Nino.

El Nino is defined by the warming of the eastern Pacific waters off the South American Coast into the Central Pacific. This warming helps to intensify the Subtropical Jet, which supports a more active stream of storms that usually cross the southern US and then ride up the East Coast. The warmth of the Gulf Stream provides additional thermal energy that can fuel explosive storms along the East Coast. These storms are called Nor’easters and can produce massive amounts of snow if enough cold air is available.
If there is not enough cold air in place, we can still have a Nor’easter, but they bring heavy rainfall. This happened with the storms from late November into January 2024 that ended our drought.

Historically, El Nino winters for VA are basically a 50/50 toss up on whether we get a big winter storm. East Coast snow storms are dependent on the timing of many smaller scale events/features that are difficult to predict on the scale of an El Nino event. Big snow events are fairly rare for our part of Virginia. We usually get a big snowstorm, which I define as 8-12” of snow, every 5-7 years.

The preferred surface pattern is cold High Pressure located over the interior Northeastern US/Southeast Canada. At the same time, we need an intensifying area of Low Pressure over the Southeastern US that moves northeast toward Virginia Beach.

The biggest February snowstorms for the Richmond area (Louisa records don’t go back very far) include 16.3” in 1899, 12.6” in 1936, and the most recent, 17.7” in 1983.

Forecasting these big storms is extremely difficult; usually Meteorologists have an idea, but we really can’t nail down the forecast until we get inside a 3–5-day window, where the models have access to all the needed observational data.

So don’t put your shovel or snow blower away just yet.

Tight Lines and Wear your PFD!


Share:

Welcome to February, the month where we start a slow warming process as we move into the Spring season, but also a month where we still can get big snowstorms. High temperature averages start in the middle 40s, but rise into the lower 50s by the end of the month.

It’s a pleasure to join the Lake Anna Breeze™ team. These articles will be focused on general weather information and weather education to better prepare yourselves for what Mother Nature can offer up to the Lake Anna community.

Our winter this year has been dominated by the Pacific Ocean circulation known as El Nino.

El Nino is defined by the warming of the eastern Pacific waters off the South American Coast into the Central Pacific. This warming helps to intensify the Subtropical Jet, which supports a more active stream of storms that usually cross the southern US and then ride up the East Coast. The warmth of the Gulf Stream provides additional thermal energy that can fuel explosive storms along the East Coast. These storms are called Nor’easters and can produce massive amounts of snow if enough cold air is available.
If there is not enough cold air in place, we can still have a Nor’easter, but they bring heavy rainfall. This happened with the storms from late November into January 2024 that ended our drought.

Historically, El Nino winters for VA are basically a 50/50 toss up on whether we get a big winter storm. East Coast snow storms are dependent on the timing of many smaller scale events/features that are difficult to predict on the scale of an El Nino event. Big snow events are fairly rare for our part of Virginia. We usually get a big snowstorm, which I define as 8-12” of snow, every 5-7 years.

The preferred surface pattern is cold High Pressure located over the interior Northeastern US/Southeast Canada. At the same time, we need an intensifying area of Low Pressure over the Southeastern US that moves northeast toward Virginia Beach.

The biggest February snowstorms for the Richmond area (Louisa records don’t go back very far) include 16.3” in 1899, 12.6” in 1936, and the most recent, 17.7” in 1983.

Forecasting these big storms is extremely difficult; usually Meteorologists have an idea, but we really can’t nail down the forecast until we get inside a 3–5-day window, where the models have access to all the needed observational data.

So don’t put your shovel or snow blower away just yet.

Tight Lines and Wear your PFD!


Share: